CN204119067U - The multiplex roles control circuit of power supply adaptor - Google Patents
The multiplex roles control circuit of power supply adaptor Download PDFInfo
- Publication number
- CN204119067U CN204119067U CN201420388267.8U CN201420388267U CN204119067U CN 204119067 U CN204119067 U CN 204119067U CN 201420388267 U CN201420388267 U CN 201420388267U CN 204119067 U CN204119067 U CN 204119067U
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- electric capacity
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- led
- control module
- usb interface
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Abstract
The utility model discloses a kind of multiplex roles control circuit of power supply adaptor, this circuit comprises DC interface, the first USB interface, secondary USB interface, the first LED, the second LED, the 3rd LED, amplifier control module, constant pressure and flow control module and DC sampling module.The utility model is provided with multiple interface, can ensure that an adapter meets the charge requirement of multiple different digital product, not only reach effect easy to carry, applied widely, and Appropriate application resource; Simultaneously, amplifier control module, constant pressure and flow control module and DC sampling module are set, during distinct interface work, corresponding LED will be turned on, the operating state of instruction interface, and constant pressure and flow control module by output current voltage control in a constant scope, effectively can be avoided the phenomenon damaging battery because overcharging, and also has reasonable in design, the feature such as use safety and long service life.
Description
Technical field
The utility model relates to adapter technique field, particularly relates to a kind of multiplex roles control circuit of power supply adaptor.
Background technology
Its major function of adapter provides the required conversion energy to digital product, and existing notebook on the market or super wait the voltage gears such as the adapter of all kinds of Note Book of voltage gear in 12v ~ 24v, mobile phone and digital periphery MP3, MP4, PSP, GPS to be single man-to-man form existence at voltage gears such as the adapter of 5v1A and the digital peripheral product of panel computer portable power source class at the adapter of 5V2A.Along with popularizing of digital product, what produce is that each digital product needs adapted charger thereupon; Particularly go out to carry multiple charger, except inconvenience, also result in the waste of resource.
In addition, when adapter charges to the battery of digital product, the battery management circuit that charge protection relies on digital product itself inner subsidiary completely, adapter charges the battery with the maximum current needed for digital product always, indicator light on adapter is just when power supply instruction is used, whether the digital product battery no matter connect fills full, and this indicator light is always bright, has and overcharges and damage the risk of battery; And charger not tool join constant current constant voltage function, there is no over-charge protective, cause its versatility limited.
Summary of the invention
For the weak point existed in above-mentioned technology, the utility model provides a kind of use safety, easy to carry, over-charge protective is effective and the multiplex roles control circuit of the power supply adaptor of diverse in function.
For achieving the above object, the utility model provides a kind of multiplex roles control circuit of power supply adaptor, comprises DC interface, the first USB interface, secondary USB interface, the first LED, the second LED, the 3rd LED, amplifier control module, constant pressure and flow control module and DC sampling module; Described DC interface is connected with the input of amplifier control module by DC sampling module, described first USB interface is connected with the input of constant pressure and flow control module respectively with secondary USB interface, the output of described constant pressure and flow control module is connected with the input of amplifier control module, and the output of described amplifier control module is connected with the first LED, the second LED and the 3rd LED respectively; And described constant pressure and flow control module comprises feedback compensation unit, synchronous buck unit and overcurrent control unit, described first USB interface is connected respectively by the input of synchronous buck unit with overcurrent control unit with secondary USB interface, described feedback compensation unit is connected with the input of overcurrent control unit, and the output of described overcurrent control unit is connected with the input of amplifier control module.
Wherein, described DC sampling module comprises the first electric capacity and DC sample resistance, and the positive pole of described first electric capacity connects DC interface, and the negative pole of described first electric capacity connects one end of DC sampling resistor, and the other end ground connection of described DC sampling resistor.
Wherein, described amplifier control module comprises the benchmark operational amplifier, the first comparator, the second comparator and the 3rd comparator that produce reference voltage, be in series with the first divider resistance and the second divider resistance between the two ends of described benchmark operational amplifier, and be also parallel with the second electric capacity between the two ends of described benchmark operational amplifier, described first comparator, the inverting input of the second comparator and the 3rd comparator is all connected between the first divider resistance and the second divider resistance, the in-phase input end of described first comparator connects the first USB interface by the 3rd resistance, the output of described first comparator connects the first LED by the 4th resistance, the in-phase input end of described second comparator connects secondary USB interface by the 5th resistance, the output of described second comparator connects the second LED by the 6th resistance, the in-phase input end of described 3rd comparator connects DC interface by the 7th resistance, the output of described second comparator connects the 3rd LED by the 8th resistance.
Wherein, described overcurrent control unit comprises a USB sampling resistor, the 2nd USB sampling resistor and control chip, described control chip is provided with eight pins, first pin of described control chip connects benchmark operational amplifier, and described benchmark operational amplifier connects the first USB interface by a USB sampling resistor, described benchmark operational amplifier also connects secondary USB interface by the 2nd USB sampling resistor, 7th pin of described control chip is connected with benchmark operational amplifier by the 3rd electric capacity and for the output voltage of detection reference operational amplifier, the 4th electric capacity is parallel with successively between described first USB interface and secondary USB interface, 5th electric capacity and the 6th electric capacity, second pin of described control chip connects a USB sampling resistor, 3rd pin of described control chip connects the 2nd USB sampling resistor.
Wherein, described feedback compensation unit comprises the 7th electric capacity and the 8th electric capacity; 8th pin of described control chip is connected benchmark operational amplifier by the 8th resistance of series connection with after the 7th electric capacity successively, and the 8th pin of described control chip also connects benchmark operational amplifier by the 8th electric capacity.
Wherein, described synchronous buck unit comprises the first inductance, P-type crystal pipe and N-type transistor; 4th pin of described control chip connects the grid of P-type crystal pipe, 5th pin of described control chip connects the grid of N-type transistor, 6th pin of described control chip connects the source electrode of P-type crystal pipe, and is connected with the 9th electric capacity in parallel successively, the tenth electric capacity and the 11 electric capacity between the 6th pin of described control chip and the source electrode of P-type crystal pipe; Described P-type crystal pipe is all connected one end of the first inductance with the drain electrode of N-type transistor, the other end of described first inductance is connected with the first USB interface and secondary USB interface respectively, the source electrode of described N-type transistor connects benchmark operational amplifier by the second inductance, and described benchmark operational amplifier is also successively by the 12 electric capacity and the one end being connected the first inductance after the 9th resistance of series connection.
The beneficial effects of the utility model are: compared with prior art, the multiplex roles control circuit of the power supply adaptor that the utility model provides, multiple interface is provided with in this circuit, can ensure that an adapter meets the charge requirement of multiple different digital product, not only reach effect easy to carry, applied widely, and Appropriate application resource; Simultaneously, amplifier control module, constant pressure and flow control module and DC sampling module are set, during distinct interface work, corresponding LED will be turned on, the operating state of instruction interface, and constant pressure and flow control module by output current voltage control in a constant scope, can effectively avoid the phenomenon damaging battery because overcharging.The utility model also has reasonable in design, the feature such as use safety and long service life.
Accompanying drawing explanation
Fig. 1 is working envelope figure of the present utility model;
Fig. 2 is the fundamental diagram of DC sampling module in the utility model;
Fig. 3 is the fundamental diagram of amplifier control module in the utility model;
Fig. 4 is the fundamental diagram of constant pressure and flow control module in the utility model.
10, DC interface 11, first USB interface
12, secondary USB interface 13, amplifier control module
14, constant pressure and flow control module 15, DC sampling module
141, feedback compensation unit 142, synchronous buck unit
143, overcurrent control unit L1, the first LED
L2, the second LED L3, the 3rd LED.
Embodiment
In order to more clearly state the utility model, below in conjunction with accompanying drawing, the utility model is further described.
Refer to Fig. 1, the multiplex roles control circuit of power supply adaptor of the present utility model, comprises DC interface 10, first usb 11, secondary USB interface 12, first LED L1, the second LED L2, the 3rd LED L3, amplifier control module 13, constant pressure and flow control module 14 and DC sampling module 15; DC interface 10 is connected with the input of amplifier control module 13 by DC sampling module 15, first usb 11 is connected with the input of constant pressure and flow control module 14 respectively with secondary USB interface 12, the output of constant pressure and flow control module 14 is connected with the input of amplifier control module 13, and the output of amplifier control module 13 is connected with the first LED L1, the second LED L2 and the 3rd LED L3 respectively; And constant pressure and flow control module 14 comprises feedback compensation unit 141, synchronous buck unit 142 and overcurrent control unit 143, first usb 11 is connected respectively by the input of synchronous buck unit 142 with overcurrent control unit 143 with secondary USB interface 12, feedback compensation unit 141 is connected with the input of overcurrent control unit 143, and the output of overcurrent control unit 143 is connected with the input of amplifier control module 13.
Compared to the situation of prior art, the multiplex roles control circuit of the power supply adaptor that the utility model provides, multiple interfaces such as DC interface 10, first usb 11 and secondary USB interface 12 are provided with in this circuit, can ensure that an adapter meets the charge requirement of multiple different digital product, not only reach effect easy to carry, applied widely, and Appropriate application resource; Simultaneously, amplifier control module 13, constant pressure and flow control module 14 and DC sampling module 15 are set, during distinct interface work, corresponding LED will be turned on, the operating state of instruction interface, and constant pressure and flow control module 14 by output current voltage control in a constant scope, can effectively avoid the phenomenon damaging battery because overcharging.The utility model also has reasonable in design, the feature such as use safety and long service life.
Please consult Fig. 2 and Fig. 3 further, DC sampling module 15 comprises the first electric capacity C1 and DC sample resistance R100, the positive pole of the first electric capacity C1 connects one end of the negative pole connection DC sampling resistor R100 of DC interface 10, first electric capacity C1, and the other end ground connection of DC sampling resistor R100.Amplifier control module 13 comprises benchmark operational amplifier U1, the first comparator U2, the second comparator U3 and the 3rd comparator U4 of generation reference voltage, be in series with the first divider resistance R1 and the second divider resistance R2 between the two ends of benchmark operational amplifier U1, and be also parallel with the second electric capacity C2 between the two ends of benchmark operational amplifier U1, first comparator U2, the inverting input of the second comparator U3 and the 3rd comparator U4 is all connected between the first divider resistance R1 and the second divider resistance R2, the in-phase input end of the first comparator U2 connects the first usb 11 by the 3rd resistance R3, the output of the first comparator U2 connects the first LED L1 by the 4th resistance R4, the in-phase input end of the second comparator U3 connects secondary USB interface 12 by the 5th resistance R5, the output of the second comparator U3 connects the second LED L2 by the 6th resistance R6, the in-phase input end of the 3rd comparator U4 connects DC interface 10 by the 7th resistance R7, the output of the second comparator U3 connects the 3rd LED L2 by the 8th resistance R8.This amplifier control module 13 mainly identifies when digital product inserts the corresponding interface of this adapter, corresponding LED bright light instruction, and exports low and high level control LED bright light by benchmark operational amplifier U1 to the comparison of voltage; The reference voltage that benchmark operational amplifier U1 produces is 20V, and the reference voltage of 20V obtains the reference voltage of an about 20mV by the first divider resistance R1 and the second divider resistance R2 dividing potential drop.
Please consult Fig. 4 further, overcurrent control unit 143 comprises a USB sampling resistor R200, the 2nd USB sampling resistor R300 and control chip U5, control chip U5 is provided with eight pins, first pin of control chip U5 connects benchmark operational amplifier U1, and benchmark operational amplifier U1 connects the first usb 11 by a USB sampling resistor R200, benchmark operational amplifier U2 also connects secondary USB interface 12 by the 2nd USB sampling resistor R300, 7th pin of control chip U5 is connected with benchmark operational amplifier U1 by the 3rd electric capacity C3 and for the output voltage of detection reference operational amplifier U1, the 4th electric capacity C4 is parallel with successively between first usb 11 and secondary USB interface 12, 5th electric capacity C5 and the 6th electric capacity C6, second pin of control chip U5 connects a USB sampling resistor R200, 3rd pin of control chip U5 connects the 2nd USB sampling resistor R300.In addition, sampled by the electric current of a USB sampling resistor R200 to the first usb 11, sampled by the electric current of the 2nd USB sampling resistor R300 to secondary USB interface 12.Feedback compensation unit 141 comprises the 7th electric capacity C7 and the 8th electric capacity C8; 8th pin of control chip U5 is connected benchmark operational amplifier U1 by the 8th resistance R8 of series connection with after the 7th electric capacity C7 successively, and the 8th pin of control chip U5 also connects benchmark operational amplifier U1 by the 8th electric capacity C8.Synchronous buck unit 142 comprises the first inductance L 1, P-type crystal pipe PMOS and N-type transistor NMOS; 4th pin of control chip U5 connects the grid of P-type crystal pipe PMOS, 5th pin of control chip U5 connects the grid of N-type transistor NMOS, 6th pin of control chip U5 connects the source electrode of P-type crystal pipe PMOS, and is connected with the 9th electric capacity C9 in parallel successively, the tenth electric capacity C10 and the 11 electric capacity C11 between the 6th pin of control chip U5 and the source electrode of P-type crystal pipe PMOS; P-type crystal pipe PMOS is all connected one end of the first inductance L 1 with the drain electrode of N-type transistor NMOS, the other end of the first inductance L 2 is connected with the first usb 11 and secondary USB interface 12 respectively, the source electrode of N-type transistor NMOS connects benchmark operational amplifier U1 by the second inductance L 2, and benchmark operational amplifier U1 is also successively by the 12 electric capacity C12 and the one end being connected the first inductance L 1 after the 9th resistance R9 of series connection.The tenth resistance R10 of series connection and the 12 resistance R12 of the 11 resistance R11 and series connection and the 13 resistance R13 is parallel with successively between the positive supply pin 1OUT+ negative supply pin 4OUT-of the first usb 11, and the positive transmission pin 3D+ of the first usb 11 is connected to the common port of the tenth resistance R10 and the 11 resistance R11, the negative transmission pin 2D-of the first usb 11 is connected to the common port of the 12 resistance R12 and the 13 resistance R13; Between the positive supply pin 1OUT+ negative supply pin 4OUT-of secondary USB interface 12, be in series with the 14 resistance R14 and the 15 resistance R15, and the positive transmission pin 3D+ of secondary USB interface 12 and negative transmission pin 2D-is all connected to the common port of the 14 resistance R14 and the 15 resistance R15.
The operation principle of this module is:
When notebook or super etc. insert DC interface 10, when electric current produces and is greater than the voltage of 20mV on DC sampling resistor R100, the 3rd comparator U4 forward input voltage is greater than reverse input voltage, the 3rd comparator U4 output high level, and the 3rd LED L3 is bright;
When mobile phone and digital peripheral product insert the first usb 11, when electric current produces and is greater than the voltage of 20mV on a USB sampling resistor R200, first comparator U2 forward input voltage is greater than reverse input voltage, and the first comparator U2 exports high level, and the first LED L1 is bright;
When panel computer or portable power source product insert secondary USB interface 12, when electric current produces and is greater than the voltage of 20mV on the 2nd USB sampling resistor R300, second comparator U3 forward input voltage is greater than reverse input voltage, and the second comparator U3 exports high level, and the second LED L2 is bright;
When charging current is greater than the charging current of setting, on a USB sampling resistor R200 and the 2nd USB sampling resistor R300, generation is greater than the output current control voltage of control chip U5, control chip U5 controls P-type crystal pipe PMOS and N-type transistor NMOS cut-off current declines, and vice versa; In addition, give the first inductance L 1 charging energy-storing when N-type transistor NMOS conducting and provide the voltage and current of 5V to export, now P-type crystal pipe PMOS turns off; The P-type crystal pipe PMOS conducting when N-type transistor NMOS turns off, the first inductance L 1 provides discharge loop through P-type crystal pipe PMOS to the energy storage of 5V electric current and voltage; 4th electric capacity C4, the 5th electric capacity C5 and the 6th electric capacity C6 carry out filtering to energy storage electric current; The internal reference voltage control of overcurrent control unit is 110mV by the second pin and the 3rd pin of the one USB sampling resistor R200, the 2nd USB sampling resistor R300 and control chip U5, compare by detecting a USB sampling resistor R200, the pressure drop of the 2nd USB sampling resistor R300 and the benchmark of 110mV, by output current voltage control in a constant scope.
First usb 11 exports the electric current of 1A, and secondary USB interface 12 exports the electric current of 2A, and DC interface exports the electric current of 3A.
Advantage of the present utility model is:
1) multiple interfaces such as DC interface 10, first usb 11 and secondary USB interface 12 are provided with in this circuit, can ensure that an adapter meets the charge requirement of multiple different digital product, not only reach effect easy to carry, applied widely, and Appropriate application resource;
2) amplifier control module 13, constant pressure and flow control module 14 and DC sampling module 15 are set, during distinct interface work, corresponding LED will be turned on, the operating state of instruction interface, and constant pressure and flow control module 14 by output current voltage control in a constant scope, can effectively avoid the phenomenon damaging battery because overcharging;
3) this amplifier control module 13 mainly identifies when digital product inserts the corresponding interface of this adapter, corresponding LED bright light instruction, and exports low and high level control LED bright light by benchmark operational amplifier U1 to the comparison of voltage;
4) the internal reference voltage control of overcurrent control unit is 110mV by second pin of a USB sampling resistor R200, the 2nd USB sampling resistor R300 and control chip U5 and the 3rd pin, compare by detecting a USB sampling resistor R200, the pressure drop of the 2nd USB sampling resistor R300 and the benchmark of 110mV, by output current voltage control in a constant scope;
5) the utility model also has reasonable in design, the feature such as use safety and long service life.
Be only several specific embodiment of the present utility model above, but the utility model is not limited thereto, the changes that any person skilled in the art can think of all should fall into protection range of the present utility model.
Claims (6)
1. a multiplex roles control circuit for power supply adaptor, is characterized in that, comprises DC interface, the first USB interface, secondary USB interface, the first LED, the second LED, the 3rd LED, amplifier control module, constant pressure and flow control module and DC sampling module; Described DC interface is connected with the input of amplifier control module by DC sampling module, described first USB interface is connected with the input of constant pressure and flow control module respectively with secondary USB interface, the output of described constant pressure and flow control module is connected with the input of amplifier control module, and the output of described amplifier control module is connected with the first LED, the second LED and the 3rd LED respectively; And described constant pressure and flow control module comprises feedback compensation unit, synchronous buck unit and overcurrent control unit, described first USB interface is connected respectively by the input of synchronous buck unit with overcurrent control unit with secondary USB interface, described feedback compensation unit is connected with the input of overcurrent control unit, and the output of described overcurrent control unit is connected with the input of amplifier control module.
2. the multiplex roles control circuit of power supply adaptor according to claim 1, it is characterized in that, described DC sampling module comprises the first electric capacity and DC sample resistance, the positive pole of described first electric capacity connects DC interface, the negative pole of described first electric capacity connects one end of DC sampling resistor, and the other end ground connection of described DC sampling resistor.
3. the multiplex roles control circuit of power supply adaptor according to claim 2, is characterized in that, described amplifier control module comprises the benchmark operational amplifier, the first comparator, the second comparator and the 3rd comparator that produce reference voltage, be in series with the first divider resistance and the second divider resistance between the two ends of described benchmark operational amplifier, and be also parallel with the second electric capacity between the two ends of described benchmark operational amplifier, described first comparator, the inverting input of the second comparator and the 3rd comparator is all connected between the first divider resistance and the second divider resistance, the in-phase input end of described first comparator connects the first USB interface by the 3rd resistance, the output of described first comparator connects the first LED by the 4th resistance, the in-phase input end of described second comparator connects secondary USB interface by the 5th resistance, the output of described second comparator connects the second LED by the 6th resistance, the in-phase input end of described 3rd comparator connects DC interface by the 7th resistance, the output of described second comparator connects the 3rd LED by the 8th resistance.
4. the multiplex roles control circuit of power supply adaptor according to claim 3, is characterized in that, described overcurrent control unit comprises a USB sampling resistor, the 2nd USB sampling resistor and control chip, described control chip is provided with eight pins, first pin of described control chip connects benchmark operational amplifier, and described benchmark operational amplifier connects the first USB interface by a USB sampling resistor, described benchmark operational amplifier also connects secondary USB interface by the 2nd USB sampling resistor, 7th pin of described control chip is connected with benchmark operational amplifier by the 3rd electric capacity and for the output voltage of detection reference operational amplifier, the 4th electric capacity is parallel with successively between described first USB interface and secondary USB interface, 5th electric capacity and the 6th electric capacity, second pin of described control chip connects a USB sampling resistor, 3rd pin of described control chip connects the 2nd USB sampling resistor.
5. the multiplex roles control circuit of power supply adaptor according to claim 4, is characterized in that, described feedback compensation unit comprises the 7th electric capacity and the 8th electric capacity; 8th pin of described control chip is connected benchmark operational amplifier by the 8th resistance of series connection with after the 7th electric capacity successively, and the 8th pin of described control chip also connects benchmark operational amplifier by the 8th electric capacity.
6. the multiplex roles control circuit of power supply adaptor according to claim 4, is characterized in that, described synchronous buck unit comprises the first inductance, P-type crystal pipe and N-type transistor; 4th pin of described control chip connects the grid of P-type crystal pipe, 5th pin of described control chip connects the grid of N-type transistor, 6th pin of described control chip connects the source electrode of P-type crystal pipe, and is connected with the 9th electric capacity in parallel successively, the tenth electric capacity and the 11 electric capacity between the 6th pin of described control chip and the source electrode of P-type crystal pipe; Described P-type crystal pipe is all connected one end of the first inductance with the drain electrode of N-type transistor, the other end of described first inductance is connected with the first USB interface and secondary USB interface respectively, the source electrode of described N-type transistor connects benchmark operational amplifier by the second inductance, and described benchmark operational amplifier is also successively by the 12 electric capacity and the one end being connected the first inductance after the 9th resistance of series connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420388267.8U CN204119067U (en) | 2014-07-15 | 2014-07-15 | The multiplex roles control circuit of power supply adaptor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420388267.8U CN204119067U (en) | 2014-07-15 | 2014-07-15 | The multiplex roles control circuit of power supply adaptor |
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| Publication Number | Publication Date |
|---|---|
| CN204119067U true CN204119067U (en) | 2015-01-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420388267.8U Expired - Fee Related CN204119067U (en) | 2014-07-15 | 2014-07-15 | The multiplex roles control circuit of power supply adaptor |
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| CN (1) | CN204119067U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10749430B2 (en) | 2015-03-13 | 2020-08-18 | Positec Power Tools (Suzhou) Co., Ltd. | Power transmission apparatus and control method therefor, and power supply system |
-
2014
- 2014-07-15 CN CN201420388267.8U patent/CN204119067U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10749430B2 (en) | 2015-03-13 | 2020-08-18 | Positec Power Tools (Suzhou) Co., Ltd. | Power transmission apparatus and control method therefor, and power supply system |
| US11601002B2 (en) | 2015-03-13 | 2023-03-07 | Positec Power Tools (Suzhou) Co., Ltd. | Electrical energy transmission apparatus, method for controlling same, and power supply system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150121 Termination date: 20160715 |
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| CF01 | Termination of patent right due to non-payment of annual fee |